Gramer Family (Grammer) Boston, MA

Looking for information on Stephan Grammer of Wuerttemberg, Germany, who immigrated through Boston, MA and had his name changed to Stephen Gramer. His date of birth was September 17, 1839. Married Mary Dame on May 9, 1865 at the Holy Trinity Church, Boston. They had six children: George S. Charle S., Edward A., Elmer W., Walter E, and Arthur David, which is my Grandfather. Appreciate any info that anyone can provide to get me started on my research. Daniel F. Gramer